| Acute Toxicity of Formalin to the Red-tide Dinoflagellate Prorocentrum minimum Schiller(Protozoa,Mastigophora) |
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| 作者姓名： | XU Henglong SONG Weibo ZHU Mingzhuang QIU Yantao and MA Honggang The Lab of Protozoology KLMEM Ocean University of China Qingdao P.R.China |
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| 作者单位： | XU Henglong1)，2)，SONG Weibo1)，ZHU Mingzhuang1)，QIU Yantao1)，and MA Honggang 1) The Lab of Protozoology，KLMEM，Ocean University of China，Qingdao 266003，P.R.China 2) Department of Biology，Liaocheng University，Liaocheng 252059，P.R.China |
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| 基金项目： | 国家高技术研究发展计划(863计划)，国家自然科学基金 |
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| 摘 要： | 1Introduction Red tides occur in recorded history,but in recentyears there is a global increase in the number of theseevents due to coastal pollution and other unclear fac-tors.Some kinds of red tides cause mass deaths of cul-tured animals and thus cause heavy economic losses forcoastwise mariculture(Nakanishi et al.,1996;Changet al.,1998;Zhu et al.,1998;Tada et al.,2001).The investigation on red tide control,however,rem-ains insufficient(Burkholder,1998;Edwards and Clark,1999).Although man…
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Acute Toxicity of Formalin to the Red-tide Dinoflagellate Prorocentrum minimum Schiller (Protozoa, Mastigophora) |
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| XU Henglong,,SONG Weibo,ZHU Mingzhuang,QIU Yantao,and MA Honggang The Lab of Protozoology,KLMEM,Ocean University of China,Qingdao ,P.R.China .Acute Toxicity of Formalin to the Red-tide Dinoflagellate Prorocentrum minimum Schiller(Protozoa,Mastigophora)[J].Journal of Ocean University of China,2005,4(1). |
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| Authors: | XU Henglong SONG Weibo ZHU Mingzhuang QIU Yantao MA Honggang |
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| Institution: | 1. The Lab of Protozoology, KLMEM, Ocean University of China, Qingdao 266003, P.R. China;Department of Biology, Liaocheng University, Liaocheng 252059, P.R. China
2. The Lab of Protozoology, KLMEM, Ocean University of China, Qingdao 266003, P.R. China |
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| Abstract: | The acute toxic levels of formalin to a marine red-tide dinoflagellate Prorocentrum minimum Schiller (Mastigophora, Dinoflagellida) were determined by linear regression analysis. The data obtained revealed that there is a close regression relationship between logarithmic concentrations of formalin and mortality probit scales of the organism when exposure times are 1, 2, 6, 12, 24h. The median lethal concentrations (LC50 values) obtained from correlation analysis for these exposure times (with 95% confidence intervals), were 11.83, 6.76, 4.37, 4.27 and 3.98mgL-1, respectively. A toxicity curve was obtained to connect the exposure time and LC50 value from the correlation between them. The results indicated that P. minimum could be killed or fixed by formalin in the concentration range of 4-12mgL-1 within 1-24h. |
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| Keywords: | toxicity formalin dinoflagellate Prorocentrum minimum bioassay |
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